Collection: Bearings

2050 Products in this selection
Combined category including sub-categories of bearings. These include needle roller inner rings, one way, needle roller with inner ring, needle roller without inner ring, plastic, conveyor, pivot, single row ball, grooved od, spherical od, thrust ball, double row ball, thrust ball washers only, thrust roller, yoyo, tapered roller set, tapered roller cup, tapered roller cone, self clinching, spherical od radial ball, angular contact, 4 point contact, special applications, disk cleaning applications, pool equipment, mri tables, special type, and dental applications.
Small Parts & Bearings

Additional resources:

A more comprehensive listing may be found on the MBA Minibearings main store at Bearings.
ID (d) O.D. (D) Width (W) W1 W2 N Indicative
Image
ID (d)
6.350
mm
O.D. (D)
12.700
mm
Width (W)
4.762
mm
W1
5.556
mm
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SWR188A-ZZS-ECO (Each) Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm Unflanged - Stainless Steel AISI 440C Bearing
46 Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $5.05 AUD
Regular price Sale price $5.05 AUD
Each
ID (d) O.D. (D) Width (W) W1 Indicative
Image
ID (d)
6.350
mm
O.D. (D)
12.700
mm
Width (W)
4.762
mm
W1
5.556
mm
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SWR188A-ZZS-ECO (Each) Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm Unflanged - Stainless Steel AISI 440C Bearing
46 Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $5.05 AUD
Regular price Sale price $5.05 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
12.700
mm
+ 0.000 / - 0.0075
(Equiv. 0.5 in.)
Width (W)
4.762
mm
+ 0.000 / - 0.125
(Equiv. 0.187 in.)
W1
5.556
mm
W2
13.894
mm
N
1.143
mm
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SFWR188A-ZZ-MC3 (Each) Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm Flanged - Stainless Steel AISI 440C Bearing
63 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $16.95 AUD
Regular price Sale price $16.95 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
12.700
mm
+ 0.000 / - 0.0075
(Equiv. 0.5 in.)
Width (W)
4.762
mm
+ 0.000 / - 0.125
(Equiv. 0.187 in.)
W1
5.556
mm
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    W2: 13.894 mm    N: 1.143 mm    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SFWR188A-ZZ-MC3 (Each) Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm Flanged - Stainless Steel AISI 440C Bearing
63 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $16.95 AUD
Regular price Sale price $16.95 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.076 / + 0.203
(Equiv. 0.25 in.)
O.D. (D)
14.288
mm
- 0.013 / - 0.208
(Equiv. 0.563 in.)
Width (W)
4.763
mm
+ 0.076 / + 0.215
(Equiv. 0.188 in.)
W1
6.350
mm
- 0.025 / - 0.202
W2
14.288
mm
- 0.025 / - 0.202
N
20
mm
Thrust Ball Bearings - 6.35x14.288x4.763 mm / 6.35 mm Flat - Stainless Steel 400 Series and Nylon
Material: Stainless Steel 400 Series and Nylon   
Category: Bearings - Thrust Ball - Flat
Part Number: T-0064-0141-F-S440-NY (Each) Thrust Ball Bearings - 6.35x14.288x4.763 mm / 6.35 mm Flat - Stainless Steel 400 Series and Nylon Bearing
Out of Stock | Backorder Now | Orders can be expected around Mon, Jul 20, 2026
Regular price $37.05 AUD
Regular price Sale price $37.05 AUD
Each
ID (d)
6.350
mm
+ 0.076 / + 0.203
(Equiv. 0.25 in.)
O.D. (D)
14.288
mm
- 0.013 / - 0.208
(Equiv. 0.563 in.)
Width (W)
4.763
mm
+ 0.076 / + 0.215
(Equiv. 0.188 in.)
W1
6.350
mm
- 0.025 / - 0.202
Thrust Ball Bearings - 6.35x14.288x4.763 mm / 6.35 mm Flat - Stainless Steel 400 Series and Nylon
Material: Stainless Steel 400 Series and Nylon    W2: 14.288 mm - 0.025 / - 0.202    N: 20 mm   
Category: Bearings - Thrust Ball - Flat
Part Number: T-0064-0141-F-S440-NY (Each) Thrust Ball Bearings - 6.35x14.288x4.763 mm / 6.35 mm Flat - Stainless Steel 400 Series and Nylon Bearing
Out of Stock | Backorder Now | Orders can be expected around Mon, Jul 20, 2026
Regular price $37.05 AUD
Regular price Sale price $37.05 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.076 / + 0.203
(Equiv. 0.25 in.)
O.D. (D)
14.288
mm
- 0.013 / - 0.208
(Equiv. 0.563 in.)
Width (W)
4.763
mm
+ 0.076 / + 0.215
(Equiv. 0.188 in.)
W1
6.350
mm
- 0.025 / - 0.202
W2
14.288
mm
- 0.025 / - 0.202
N
28
mm
1071591 | T-0064-0141-F-NY (Each) --- Thrust Ball Bearings - 6.35x14.288x4.763 mm / 6.35 mm Flat - Chrome Steel Bearing
Material: Chrome Steel   
Category: Bearings - Thrust Ball - Flat
Part Number: T-0064-0141-F-NY (Each) Thrust Ball Bearings - 6.35x14.288x4.763 mm / 6.35 mm Flat - Chrome Steel Bearing
Out of Stock | Backorder Now | Orders can be expected around Mon, Jul 20, 2026
Regular price $10.77 AUD
Regular price Sale price $10.77 AUD
Each
ID (d)
6.350
mm
+ 0.076 / + 0.203
(Equiv. 0.25 in.)
O.D. (D)
14.288
mm
- 0.013 / - 0.208
(Equiv. 0.563 in.)
Width (W)
4.763
mm
+ 0.076 / + 0.215
(Equiv. 0.188 in.)
W1
6.350
mm
- 0.025 / - 0.202
1071591 | T-0064-0141-F-NY (Each) --- Thrust Ball Bearings - 6.35x14.288x4.763 mm / 6.35 mm Flat - Chrome Steel Bearing
Material: Chrome Steel    W2: 14.288 mm - 0.025 / - 0.202    N: 28 mm   
Category: Bearings - Thrust Ball - Flat
Part Number: T-0064-0141-F-NY (Each) Thrust Ball Bearings - 6.35x14.288x4.763 mm / 6.35 mm Flat - Chrome Steel Bearing
Out of Stock | Backorder Now | Orders can be expected around Mon, Jul 20, 2026
Regular price $10.77 AUD
Regular price Sale price $10.77 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.076 / - 0.000
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.076
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.127 / - 0.000
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel 316 Similar to A4, 18-10
Material: Stainless Steel 316 (Similar to A4, 18-10)    Type: Semi-Precision   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S316-R4-2PE (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel 316 Similar to A4, 18-10 Bearing
32 Available Now | Item Discontinued - Up to 32 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $6.79 AUD
Regular price $8.15 AUD Sale price $6.79 AUD
Each
ID (d)
6.350
mm
+ 0.076 / - 0.000
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.076
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.127 / - 0.000
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel 316 Similar to A4, 18-10
Material: Stainless Steel 316 (Similar to A4, 18-10)    Type: Semi-Precision   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S316-R4-2PE (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel 316 Similar to A4, 18-10 Bearing
32 Available Now | Item Discontinued - Up to 32 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $6.79 AUD
Regular price $8.15 AUD Sale price $6.79 AUD
Each
ID (d)
6.350
mm
+ 0.076 / - 0.000
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.076
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.127 / - 0.000
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel 316 Similar to A4, 18-10
Material: Stainless Steel 316 (Similar to A4, 18-10)    Type: Semi-Precision   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S316-R4-TF-TTS (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel 316 Similar to A4, 18-10 Bearing
34 Available Now | Item Discontinued - Up to 34 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $7.69 AUD
Regular price $9.23 AUD Sale price $7.69 AUD
Each
ID (d)
6.350
mm
+ 0.076 / - 0.000
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.076
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.127 / - 0.000
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel 316 Similar to A4, 18-10
Material: Stainless Steel 316 (Similar to A4, 18-10)    Type: Semi-Precision   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S316-R4-TF-TTS (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel 316 Similar to A4, 18-10 Bearing
34 Available Now | Item Discontinued - Up to 34 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $7.69 AUD
Regular price $9.23 AUD Sale price $7.69 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SR4-2RS-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
44 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $4.14 AUD
Regular price Sale price $4.14 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SR4-2RS-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
44 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $4.14 AUD
Regular price Sale price $4.14 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SR4-2RS-ECO (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
31 Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $2.23 AUD
Regular price Sale price $2.23 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SR4-2RS-ECO (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
31 Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $2.23 AUD
Regular price Sale price $2.23 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.000 / - 0.005
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Type: Abec 5   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SR4-ZZS-MC34-GR5-R-L23 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
19 Available Now | Further orders can be expected around Sun, Aug 23, 2026
Regular price $34.41 AUD
Regular price $41.29 AUD Sale price $34.41 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.005
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Type: Abec 5   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SR4-ZZS-MC34-GR5-R-L23 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
19 Available Now | Further orders can be expected around Sun, Aug 23, 2026
Regular price $34.41 AUD
Regular price $41.29 AUD Sale price $34.41 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.000 / - 0.007
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.007
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.120
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: P6   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SR4-ZZ-MC3-JP6 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
54 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $5.23 AUD
Regular price Sale price $5.23 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.007
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.007
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.120
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: P6   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SR4-ZZ-MC3-JP6 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
54 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $5.23 AUD
Regular price Sale price $5.23 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SR4-ZZ-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
40 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $4.23 AUD
Regular price Sale price $4.23 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SR4-ZZ-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
40 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $4.23 AUD
Regular price Sale price $4.23 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (W)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-ZZ-ECO (PK-5) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
1 pack (5 pcs) Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $7.14 AUD
Regular price Sale price $7.14 AUD
Per 5
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (W)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-ZZ-ECO (PK-5) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
1 pack (5 pcs) Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $7.14 AUD
Regular price Sale price $7.14 AUD
Per 5
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-ZZ-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
96 Available Now | More stock due: 200 around Tue, Jun 30, 2026 | Further orders can be expected around Fri, Jul 31, 2026
Regular price $3.95 AUD
Regular price Sale price $3.95 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-ZZ-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
96 Available Now | More stock due: 200 around Tue, Jun 30, 2026 | Further orders can be expected around Fri, Jul 31, 2026
Regular price $3.95 AUD
Regular price Sale price $3.95 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (W)
4.978
mm
Material: Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-CSN-T9H-ACO-ECO (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls Bearing
Out of Stock | Backorder Now | Orders can be expected around Sat, Aug 08, 2026
Regular price $66.05 AUD
Regular price $79.25 AUD Sale price $66.05 AUD
Each
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (W)
4.978
mm
Material: Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-CSN-T9H-ACO-ECO (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls Bearing
Out of Stock | Backorder Now | Orders can be expected around Sat, Aug 08, 2026
Regular price $66.05 AUD
Regular price $79.25 AUD Sale price $66.05 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-2RS-MC3-NSK (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
140 Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $6.59 AUD
Regular price Sale price $6.59 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-2RS-MC3-NSK (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
140 Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $6.59 AUD
Regular price Sale price $6.59 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100   
Category: Bearings - Single Row Ball - with Snap Ring
Part Number: R4-2RS-MC3NR (PK-5) Single Row Ball Bearings - 6.35x15.875x4.978 mm with Snap Ring - Chrome Steel SAE 52100 Bearing
14 units (70 pcs) Available Now | Item Discontinued - Up to 14 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Per 5
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100   
Category: Bearings - Single Row Ball - with Snap Ring
Part Number: R4-2RS-MC3NR (PK-5) Single Row Ball Bearings - 6.35x15.875x4.978 mm with Snap Ring - Chrome Steel SAE 52100 Bearing
14 units (70 pcs) Available Now | Item Discontinued - Up to 14 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Per 5
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-2RS-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
186 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $3.77 AUD
Regular price Sale price $3.77 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-2RS-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
186 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $3.77 AUD
Regular price Sale price $3.77 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (W)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-2RS-ECO (PK-2) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
7 units (14 pcs) Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $3.59 AUD
Regular price Sale price $3.59 AUD
Per 2
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (W)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: R4-2RS-ECO (PK-2) Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
7 units (14 pcs) Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $3.59 AUD
Regular price Sale price $3.59 AUD
Per 2
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.076 / - 0.000
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.076
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.127 / - 0.000
(Equiv. 0.196 in.)
Plastic Bearings - 6.35x15.875x4.978 mm - Acetal with Glass Balls
Material: Acetal with Glass Balls    Max RPM in Air: 2352   
Category: Bearings - Plastic - Acetal
Part Number: P-R4-AGL (Each) Plastic Bearings - 6.35x15.875x4.978 mm - Acetal with Glass Balls Bearing
21 Available Now | Further orders can be expected around Sat, Aug 15, 2026
Regular price $14.32 AUD
Regular price $26.03 AUD Sale price $14.32 AUD
Each
ID (d)
6.350
mm
+ 0.076 / - 0.000
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.076
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.127 / - 0.000
(Equiv. 0.196 in.)
Plastic Bearings - 6.35x15.875x4.978 mm - Acetal with Glass Balls
Material: Acetal with Glass Balls    Max RPM in Air: 2352   
Category: Bearings - Plastic - Acetal
Part Number: P-R4-AGL (Each) Plastic Bearings - 6.35x15.875x4.978 mm - Acetal with Glass Balls Bearing
21 Available Now | Further orders can be expected around Sat, Aug 15, 2026
Regular price $14.32 AUD
Regular price $26.03 AUD Sale price $14.32 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
W2
17.526
mm
N
1.067
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SFR4-ZZ-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Flanged - Stainless Steel AISI 440C Bearing
121 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $3.95 AUD
Regular price Sale price $3.95 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    W2: 17.526 mm    N: 1.067 mm    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SFR4-ZZ-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Flanged - Stainless Steel AISI 440C Bearing
121 Available Now | Further orders can be expected around Fri, Jul 31, 2026
Regular price $3.95 AUD
Regular price Sale price $3.95 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
W2
17.526
mm
N
1.067
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SFR4-2RS-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Flanged - Stainless Steel AISI 440C Bearing
146 Available Now | Item Discontinued - Up to 146 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $4.69 AUD
Regular price $8.24 AUD Sale price $4.69 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    W2: 17.526 mm    N: 1.067 mm    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SFR4-2RS-MC3 (Each) Single Row Ball Bearings - 6.35x15.875x4.978 mm Flanged - Stainless Steel AISI 440C Bearing
146 Available Now | Item Discontinued - Up to 146 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $4.69 AUD
Regular price $8.24 AUD Sale price $4.69 AUD
Each
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
W2
17.526
mm
N
1.067
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: FR4-2RS-MC3 (PK-100) Single Row Ball Bearings - 6.35x15.875x4.978 mm Flanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Jul 31, 2026
Regular price $1,231.86 AUD
Regular price Sale price $1,231.86 AUD
Per 100
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (W)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    W2: 17.526 mm    N: 1.067 mm    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: FR4-2RS-MC3 (PK-100) Single Row Ball Bearings - 6.35x15.875x4.978 mm Flanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Jul 31, 2026
Regular price $1,231.86 AUD
Regular price Sale price $1,231.86 AUD
Per 100
View the product page first if you are unsure.
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (W)
5.740
mm
W1
6.350
mm
W2
17.450
mm
N
1.070
mm
Single Row Ball Bearings - 6.35x15.875x5.74 mm / 6.35 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Flanged
Part Number: FWR4W2-ZZ-TP-ECO (Each) Single Row Ball Bearings - 6.35x15.875x5.74 mm / 6.35 mm Flanged - Chrome Steel SAE 52100 Bearing
6 Available Now | Further orders can be expected around Sat, Aug 08, 2026
Regular price $16.95 AUD
Regular price $42.98 AUD Sale price $16.95 AUD
Each
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (W)
5.740
mm
W1
6.350
mm
Single Row Ball Bearings - 6.35x15.875x5.74 mm / 6.35 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    W2: 17.450 mm    N: 1.070 mm    Type: Economy   
Category: Bearings - Single Row Ball - Flanged
Part Number: FWR4W2-ZZ-TP-ECO (Each) Single Row Ball Bearings - 6.35x15.875x5.74 mm / 6.35 mm Flanged - Chrome Steel SAE 52100 Bearing
6 Available Now | Further orders can be expected around Sat, Aug 08, 2026
Regular price $16.95 AUD
Regular price $42.98 AUD Sale price $16.95 AUD
Each
View the product page first if you are unsure.
ID (d)
6.350
mm
+ 0.076 / - 0.000
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.076
(Equiv. 0.625 in.)
Width (W)
9.525
mm
+ 0.127 / - 0.000
(Equiv. 0.375 in.)
Plastic Bearings - 6.35x15.875x9.525 mm - Acetal with Stainless 316 Balls
Material: Acetal with Stainless 316 Balls    Max RPM in Air: 1881   
Category: Bearings - Plastic - Acetal
Part Number: P-DR-R4G-AS6 (Each) Plastic Bearings - 6.35x15.875x9.525 mm - Acetal with Stainless 316 Balls Bearing
1 Available Now | Further orders can be expected around Sat, Aug 15, 2026
Regular price $43.14 AUD
Regular price $79.32 AUD Sale price $43.14 AUD
Each
ID (d)
6.350
mm
+ 0.076 / - 0.000
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.076
(Equiv. 0.625 in.)
Width (W)
9.525
mm
+ 0.127 / - 0.000
(Equiv. 0.375 in.)
Plastic Bearings - 6.35x15.875x9.525 mm - Acetal with Stainless 316 Balls
Material: Acetal with Stainless 316 Balls    Max RPM in Air: 1881   
Category: Bearings - Plastic - Acetal
Part Number: P-DR-R4G-AS6 (Each) Plastic Bearings - 6.35x15.875x9.525 mm - Acetal with Stainless 316 Balls Bearing
1 Available Now | Further orders can be expected around Sat, Aug 15, 2026
Regular price $43.14 AUD
Regular price $79.32 AUD Sale price $43.14 AUD
Each
View the product page first if you are unsure.